#include "DocumentClassPtr.h"
#include "update_flags.h"
-#include "support/shared_ptr.h"
#include "support/strfwd.h"
#include "support/types.h"
class Change;
class CoordCache;
class Cursor;
+class CursorSlice;
class DispatchResult;
class DocIterator;
class DocumentClass;
class FuncStatus;
class Intl;
class Inset;
+class PainterInfo;
class ParIterator;
class ParagraphMetrics;
class Point;
+class TexRow;
class Text;
class TextMetrics;
*/
void processUpdateFlags(Update::flags flags);
- /// move the screen to fit the cursor.
+ /// return true if one shall move the screen to fit the cursor.
/// Only to be called with good y coordinates (after a bv::metrics)
- bool fitCursor();
+ bool needsFitCursor() const;
+
+ // Returns the amount of horizontal scrolling applied to the
+ // top-level row where the cursor lies
+ int horizScrollOffset() const;
+
+ // Points to the top-level row where the cursor lies (during draw).
+ CursorSlice const & currentRowSlice() const;
+
+ // Points to the top-level row where the cursor lied at last draw event.
+ CursorSlice const & lastRowSlice() const;
+
/// reset the scrollbar to reflect current view position.
void updateScrollbar();
/// return the Scrollbar Parameters.
/// set the cursor based on the given TeX source row.
void setCursorFromRow(int row);
+ ///
+ void setCursorFromRow(int row, TexRow const & texrow);
/// set cursor to the given inset. Return true if found.
bool setCursorFromInset(Inset const *);
void recenter();
/// Ensure that the BufferView cursor is visible.
/// This method will automatically scroll and update the BufferView
- /// if needed.
- void showCursor();
+ /// (metrics+drawing) if needed.
+ void showCursor();
/// Ensure the passed cursor \p dit is visible.
/// This method will automatically scroll and update the BufferView
- /// if needed.
+ /// (metrics+drawing) if needed.
/// \param recenter Whether the cursor should be centered on screen
void showCursor(DocIterator const & dit, bool recenter,
bool update);
/// \return true if no further update is needed.
bool singleParUpdate();
+ // Set the row on which the cursor lives.
+ void setCurrentRowSlice(CursorSlice const & rowSlice);
+
+ // Check whether the row where the cursor lives needs to be scrolled.
+ // Update the drawing strategy if needed.
+ void checkCursorScrollOffset();
+
/// The minimal size of the document that is visible. Used
/// when it is allowed to scroll below the document.
int minVisiblePart();
- /// Search recursively for the the innermost inset that covers (x, y) position.
+ /// Search recursively for the innermost inset that covers (x, y) position.
/// \retval 0 if no inset is found.
Inset const * getCoveringInset(
Text const & text, //< The Text where we start searching.